CCFE is the laboratory i work for and we have a fund giving grants to local schools science projects mainly but also to support employees when the do sponsored things for charity such as running a marathon. So it is a pot of money promoting engineering, and it is not very big so £500 would make quite a difference and I would be proud to see the prize go into this fund.
I am not so interested in winning the competition, but rather in getting you to think a bit about being an engineer and understanding what is involved. Perhaps this will help you decide whether to be an engineer in the future or not. It is not for everyone!